220102730 has 8 divisors (see below), whose sum is σ = 396184932. Its totient is φ = 88041088.

The previous prime is 220102699. The next prime is 220102741. The reversal of 220102730 is 37201022.

It can be written as a sum of positive squares in 2 ways, for example, as 211382521 + 8720209 = 14539^2 + 2953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 220102699 and 220102708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11005127 + ... + 11005146.

Almost surely, 2^220102730 is an apocalyptic number.

220102730 is a deficient number, since it is larger than the sum of its proper divisors (176082202).

220102730 is a wasteful number, since it uses less digits than its factorization.

220102730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22010280.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 220102730 is about 14835.8595976101. The cubic root of 220102730 is about 603.7750229317.

Adding to 220102730 its reverse (37201022), we get a palindrome (257303752).

The spelling of 220102730 in words is "two hundred twenty million, one hundred two thousand, seven hundred thirty".